$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-images.git /var/lib/mock/f40-build-2278915-55295/root/chroot_tmpdir/scmroot/gap-pkg-images
Cloning into '/var/lib/mock/f40-build-2278915-55295/root/chroot_tmpdir/scmroot/gap-pkg-images'...
$ git fetch origin 2f04ff6637a76f40792231b21cc5dc4a23909479:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-images
 * [new ref]         2f04ff6637a76f40792231b21cc5dc4a23909479 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f04ff6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild